Grundfos MAGNA3 Installation Manual

GRUNDFOS INSTRUCTIONS

MAGNA3

Installation and operating instructions

contents of Table

MAGNA3

English (US)

Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Español (MX)

Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Français (CA)

Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2

English (US) Installation and operating instructions

Original installation and operating instructions.

CONTENTS

		Page
1.	Limited warranty	4
2.	Symbols used in this document	4
3.	General information	5
3.1	Applications	5
3.2	Pumped liquids	5
3.3	Operating conditions	6
3.4	Frost protection	6
3.5	Insulating shells	6
3.6	Non-return valve	6
3.7	Nameplate	7
3.8	Radio communication	8
3.9	Tools	8
4.	Mechanical installation	8
4.1	Installing the pump	8
4.2	Positioning	9
4.3	Control box positions	9
4.4	Pump head position	9
4.5	Changing the control box position	10
5.	Electrical installation	11
5.1	Supply voltage	12

5.2Connection to the power supply (models 40-XX,

	50-XX, 65-XX, 80-XX, 100-XX)	12
5.3	Connection to the power supply (models 32-XX)	13
5.4	Connection diagram	14
5.5	Input/output communication	16
5.6	Analog input for external sensor	18
5.7	Electrical connection for external sensor	19
5.8	Priority of settings	19
6.	First start-up	20
7.	Settings	21
7.1	Overview of settings	21
8.	Menu overview	22
9.	Control panel	23
10.	Menu structure	23
11.	"Home" menu	23
12.	"Status" menu	24
13.	"Settings" menu	24
13.1	Setpoint	24
13.2	Operating mode	25
13.3	Control mode	25
13.4	FLOWLIMIT	29
13.5	Automatic Night Setback	29
13.6	Relay outputs	30
13.7	Setpoint influence	30
13.8	Bus communication	31
13.9	General settings	31
14.	"Assist" menu	35
14.1	Assisted pump setup	35
14.2	Setting of date and time	35
14.3	Multi-pump setup	35
14.4	Setup, analog input	35
14.5	Description of control mode	35
14.6	Assisted fault advice	35
14.7	Wireless GENIair	35
14.8	Multi-pump function	35

15.	Selection of control mode	36
16.	Fault finding	38
16.1	Grundfos Eye operating indications	38
16.2	Signalling communication with remote control	38
16.3	Fault finding	39
17.	Sensor	40
17.1	Sensor specifications	40
18.	Accessories	41
18.1	Grundfos GO Remote	41
18.2	Communication	41
18.3	Fitting the CIM module	44
19.	Technical data	45
20.	Disposal	45

Warning

Prior to installation, read these installation and operating instructions. Installation and operation must comply with local regulations and accepted codes of good practice.

Warning

The use of this product requires experience with and knowledge of the product.

Persons with reduced physical, sensory or mental capabilities must not use this product, unless they are under supervision or have been instructed in the use of the product by a person responsible for their safety.

Children must not use or play with this product.

English (US)

3

(US) English

1. Limited warranty

Products manufactured by GRUNDFOS PUMPS CORPORATION (Grundfos) are warranted to the original user only to be free of defects in material and workmanship for a period of 24 months from date of installation, but not more than 30 months from date of manufacture. Grundfos' liability under this warranty shall be limited to repairing or replacing at Grundfos' option, without charge, F.O.B. Grundfos' factory or authorized service station, any product of Grundfos' manufacture. Grundfos will not be liable for any costs of removal, installation, transportation, or any other charges which may arise in connection with a warranty claim. Products which are sold but not manufactured by Grundfos are subject to the warranty provided by the manufacturer of said products and not by Grundfos' warranty. Grundfos will not be liable for damage or wear to products caused by abnormal operating conditions, accident, abuse, misuse, unauthorized alteration or repair, or if the product was not installed in accordance with Grundfos' printed installation and operating instructions.

To obtain service under this warranty, the defective product must be returned to the distributor or dealer of Grundfos' products from which it was purchased together with proof of purchase and installation date, failure date, and supporting installation data. Unless otherwise provided, the distributor or dealer will contact Grundfos or an authorized service station for instructions.

Any defective product to be returned to Grundfos or a service station must be sent freight prepaid; documentation supporting the warranty claim and/or a Return Material Authorization must be included if so instructed.

GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES ARISING FROM INSTALLATION, USE, OR ANY OTHER CAUSES. THERE ARE NO EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND THOSE WARRANTIES DESCRIBED OR REFERRED TO ABOVE.

Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages and some jurisdictions do not allow limit actions on how long implied warranties may last. Therefore, the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from jurisdiction to jurisdiction.

2. Symbols used in this document

Warning

If these safety instructions are not observed, it may result in personal injury.

Warning

If these instructions are not observed, it may lead to electric shock with consequent risk of serious personal injury or death.

Warning

The surface of the product may be so hot that it may cause burns or personal injury.

Warning

Risk of dropping objects which may cause personal injury.

Warning

Escaping vapor involves the risk of personal injury.

If these safety instructions are not observed,

	Caution it may result in malfunction or damage to the
		equipment.
	Note	Notes or instructions that make the job easier
		and ensure safe operation.

4

3. General information

The Grundfos MAGNA3 is a complete range of circulator pumps with integrated controller enabling adjustment of pump performance to the actual system requirements. In many systems, this will reduce the power consumption considerably, reduce noise from thermostatic radiator valves and similar fittings and improve the control of the system.

The desired head can be set on the pump control panel.

3.1 Applications

The Grundfos MAGNA3 is designed for circulating liquids in the following systems:

•heating systems

•domestic hot-water systems

•air-conditioning and cooling systems.

The pump can also be used in the following systems:

•ground source heat pump systems

•solar-heating systems.

3.2 Pumped liquids

The pump is suitable for thin, clean, non-aggressive and non-explosive liquids, not containing solid particles or fibers that may attack the pump mechanically or chemically.

In heating systems, the water should meet the requirements of accepted standards on water quality in heating systems.

In domestic hot-water systems, we recommend to use MAGNA3 pumps only for water with a degree of hardness lower than approx. 14 °dH.

In domestic hot-water systems, we recommend to keep the liquid temperature below 150 °F (+65 °C) to eliminate the risk of lime precipitation.

Warning

Do not use the pump for flammable liquids, such as diesel oil and gasoline.

Warning

Do not use the pump for aggressive liquids, such as acids and sea water.

Max. 95 % RH

Enclosure Type 2

TM05 2857 0612

Fig. 1 Pumped liquids

3.2.1 Glycol

The pump can be used for pumping water/glycol mixtures up to 50 %.

Example of a water/ethylene glycol mixture:

Maximum viscosity: 50 cSt ~ 50 % water / 50 % ethylene glycol mixture at +14 °F (-10 °C).

The pump has a power-limiting function that protects against overload.

The pumping of glycol mixtures will affect the max. curve and reduce the performance, depending on the water/ethylene glycol mixture and the liquid temperature.

To prevent the ethylene glycol mixture from degrading, avoid temperatures exceeding the rated liquid temperature and minimize the operating time at high temperatures.

It is important to clean and flush the system before the ethylene glycol mixture is added.

To prevent corrosion or lime precipitation, check and maintain the ethylene glycol mixture regularly. If further dilution of the supplied ethylene glycol is required, follow the glycol supplier's instructions.

Additives with a density and/or kinematic Note viscosity higher than those/that of water will

reduce the hydraulic performance.

English (US)

5

(US) English

3.3Operating conditions

1Min./Max. +14 °F - 230 °F (-10 °C - +110 °C)

	2	175 psi (12 bar)
	3	+32 to +104 °F
		(0 to +40 °C)
	4	< 43 dB(A)	1413
			TM05 7662

Fig. 2 Operating conditions

3.3.1Liquid temperature

See fig. 2, pos. 1.

Continuously: +14 °F to +230 °F (-10 °C to +110 °C). Domestic hot-water systems:

• Up to +150 °F (+65 °C).

3.3.2System pressure

See fig. 2, pos. 2.

The maximum permissible system pressure is stated on the pump nameplate.

3.3.3 Ambient temperature

See fig. 2, pos. 3.

+32 °F to +104 °F (0 °C to +40 °C).

The control box is air-cooled. Therefore, it is important that the maximum permissible ambient temperature is not exceeded during operation.

During transport: -40 °F to +158 °F (-40 °C to +70 °C).

3.3.4Sound pressure level

See fig. 2, pos. 4.

The sound pressure level of the pump is lower than 43 dB(A).

3.3.5Approvals

•Conforms to ANSI/UL Standard 778.

•Certified to CAN/CSA Standard C22.2 No. 108.

• The protective earth (ground) symbol identifies any terminal which is intended for connection to an external conductor for protection against electric shock in case of a fault, or the terminal of a protective earth (ground) electrode.

3.4 Frost protection

If the pump is not used during periods of frost, Caution necessary steps must be taken to prevent frost

bursts.

Additives with a density and/or kinematic Note viscosity higher than those/that of water will

reduce the hydraulic performance.

3.5 Insulating shells

Insulating shells are available for single-head pumps only.

		Limit the heat loss from the pump housing and
	Note
		pipework.

The heat loss from the pump and pipework can be reduced by insulating the pump housing and the pipework. See fig. 3 and fig. 13.

•Insulating shells for pumps in heating systems are supplied with the pump; see fig. 3.

•For pumps in air-conditioning and cooling systems (down to +14 ° (-10 °C)) it is required to apply a silicon sealant to the internal contours of the shell in order to eliminate any air gaps and prevent condensation between the insulation shell and pump housing. Alternatively, the pump can also be insulated manually in accordance with standard insulating requirements for heating and cooling systems (fig. 13).

The fitting of insulating shells will increase the pump dimensions.

TM05 2859 0612

Fig. 3 Fitting insulating shells to the pump

	Do not insulate the control box or cover the
Caution
	control panel.

3.6 Non-return valve

If a non-return valve is fitted in the pipe system (fig. 4), it must be ensured that the set minimum discharge pressure of the pump is always higher than the closing pressure of the valve. This is especially important in proportional-pressure control mode (reduced head at low flow). The closing pressure of a single non-return valve is accounted for in the pump settings as the minimum head delivered is 5 ft (1.5 m).

TM05 3055 0912

Fig. 4 Non-return valve

6

3.7 Nameplate

The pump nameplate provides the following information:

TYPE 2	PSI
BOITIER DE TYPE 2
THERMALLY PROTECTED
Nonsubmersible Pump
	For use with maximum 230° F water

RISK OF ELECTRIC SHOCK. DE-ENERGIZE EQUIPMENT BEFORE REMOVAL OF COVER & SERVICING. FOR SUPPLY

CONNECTION USE COPPER WIRE SUITABLE FOR 90 °C OR EQUIVALENT. THIS PUMP HAS NOT BEEN INVESTIGATED FOR USE

IN SWIMMING POOL OR MARINE AREAS. TO REDUCE THE RISK OF ELECTRIC SHOCK, SEE INSTRUCTION MANUAL FOR

PROPER INSTALLATION; ACCEPTABLE FOR INDOOR USE ONLY.

RISQUE DE CHOC ELECTRIQUE. HORS DES EQUIPEMENT AVANT ENLEVEMENT DE LA COUVERTURE ET D’ENTRENTIEN. POUR

LE RECCORDEMENT D’ALIMENTATION, EMPLOYEZ DES FILS QUI RESISTENT AU MOINS A 90 °C UTILISEZ UNIQUEMENT DES

CONDUCTEURS DE CUIVRE. POUR RE’DUIRE LES RISQUES DE CHOC E’LECTRIQUE, CONSULTES LE MANUEL D’INSTRUCTIONS

Contains FCC ID: OG3-RADIOM01-2G4 POUR UNE INSTALLATION CORRECTE. EMPLOYER UNIQUEMENT A L’INTERIEUR.

Fig. 5 Example of nameplate

Pos. Description

1Product name

2Model

3Production code (year and week)

4Serial number

5Product number

6Enclosure type

7Energy Efficiency Index (EEI)

8Part (according to EEI)

9TF-class

10Minimum current [A]

11Maximum current [A]

12Minimum power [W]

13Maximum power [W]

14Maximum pressure

15Voltage [V] and frequency [Hz]

16QR (Quick Response) code

17Approvals (nameplate)

18Assembled in USA

English (US)

TM05 6381 4612

7

(US) English

3.8 Radio communication

The wireless radio in this product is class B.

Intended use

This product incorporates a radio for remote control.

The product can communicate with Grundfos Go Remote and with other MAGNA3 pumps of the same type via the built-in radio.

Only Grundfos-approved external antennae may be connected to this product, and only by a Grundfos-approved installer.

3.9 Tools

1.2 x 8.0

0.6 x 3.5

TX20

5.0

1

2

3

4

	5	6	7	TM05 6472 4712
Fig. 6	Recommended tools
Pos.	Tool		Size
1	Screwdriver, straight slot		1.2 x 8.0 mm
2	Screwdriver, straight slot		0.6 x 3.5 mm
3	Screwdriver, torx bit		TX20
4	Hexagon key		5.0 mm
5	Open-end wrench		Depending on flange bolt
			size
6	Wire cutter
7	Pipe wrench

4. Mechanical installation

4.1 Installing the pump

MAGNA3 is designed for indoor installation.

The pump must be installed in such a way that it is not stressed by the pipework.

The pump may be suspended direct in the pipes, provided that the pipework can support the pump.

Twin-head pumps are prepared for installation on a mounting bracket or base plate.

To ensure adequate cooling of motor and electronics, the following must be observed:

•Position the pump in such a way that sufficient cooling is ensured.

•The temperature of the ambient air must not exceed +104 °F (+40 °C).

Warning

Observe local regulations setting limits for manual lifting or handling.

	Step	Action	Illustration
		Arrows on the pump housing
		indicate the liquid flow direction
	1	through the pump. The liquid	0612
		flow direction can be horizontal
			2862
		or vertical, depending on the
		control box position.	TM05
		Close the isolating valves and
	2	make sure that the system is not	0612
		pressurized during the
		installation of the pump.	TM05 2863
	3	Mount the pump with gaskets in	0612
		the pipework.
			TM05 2864
		Fit bolts and nuts. Use the right	0612
	4	size of bolts according to system
		pressure.	TM05 2865

8

4.2 Positioning

Always install the pump with horizontal motor shaft.

•Pump installed correctly in a vertical pipe. See fig. 7, pos. A.

•Pump installed correctly in a horizontal pipe. See fig. 7, pos. B.

•Do not install the pump with vertical motor shaft. See fig. 7, pos. C and D.

A B

C D

TM05 2866 0712

Fig. 7 Pump installed with horizontal motor shaft

4.3 Control box positions

To ensure adequate cooling, the control box must be in horizontal position with the Grundfos logo in vertical position. See fig. 8.

TM05 2915 0612

Fig. 8 Pump with control box in horizontal position

If the pump head is removed before the pump is installed in the pipework, pay special attention when fitting the pump head to the pump housing:

1.Gently lower the pump head with rotor shaft and impeller into the pump housing.

2.Make sure that the contact face of the pump housing and that of the pump head are in contact before the clamp is tightened. See fig. 9.

TM05 5837 4112

Fig. 9 Fitting the pump head to the pump housing

4.4 Pump head position

If the pump head is removed before the pump is installed in the pipework, pay special attention when fitting the pump head to the pump housing:

3.Visually check that the floating ring in the sealing system is centered. See figs. 10 and 11.

4.Gently lower the pump head with rotor shaft and impeller into the pump housing.

5.Make sure that the contact face of the pump housing and that of the pump head are in contact before the clamp is tightened. See fig. 12.

TM05 6650 5012

Fig. 10 Correctly centered sealing system

English (US)

9

(US) English

TM05 6651 5012

Fig. 11 Incorrectly centered sealing system

Observe the position of the clamp before the clamp is tightened. Incorrect position of the Caution clamp will cause leakage from the pump and

damage the hydraulic parts in the pump head. See fig. 12.

TM05 5837 4112

Fig. 12 Fitting the pump head to the pump housing

4.5 Changing the control box position

Warning

The warning symbol on the clamp holding the pump head and pump housing together indicates that there is a risk of personal injury. See specific warnings below.

Warning

When loosening the clamp, do not drop the pump head.

Warning

Risk of escaping vapor.

	Step	Action	Illustration
		Loosen the screw in the clamp
		holding the pump head and pump
		housing together.	0612
	1	Warning: If the screw is loosened
		too much, the pump head will be	2867
		completely disconnected from the
									TM05
		pump housing.
		Carefully rotate the pump head to	0612
		the desired position.
			2868
	2	If the pump head is stuck, loosen it
		with a light blow of a rubber							TM05
		mallet.
		Position the control box in	0612
		horizontal position so that the
	3	Grundfos logo is in vertical
			2869
		position. The motor shaft must be
		horizontal.							TM05
		Due to the drain hole in the stator
	4	housing, position the gap of the
		clamp as shown in step 4a, 4b, 4c
									TM05 2870 0612
		or 4d.
		Single-head pump.						2871 0612
									TM05
	4a	Position the clamp so that the gap
			-
		points towards the arrow.
									0612
		It can be in position 3 or 9 o'clock.
									TM05 2918

10

Step	Action			Illustration
	Single-head pump.
	Note: The gap of the clamp can
	also be in position 6 o'clock for the
				1912
4b	following pump sizes:
	•	MAGNA3 65-XX		2899
	•	MAGNA3 80-XX						TM05
	•	MAGNA3 100-XX.
	Twin-head pump.			2873 0612
								TM05-
	Position the clamps so that the
4c	gaps point towards the arrows.			0612
	They can be in position 3 or
	9 o'clock.							TM05 2917
	Twin-head pump.
	Note: The gap of the clamp can
	also be in position 6 o'clock for the			1912
4d	following pump sizes:
	•	MAGNA3 65-XX		2897
	•	MAGNA3 80-XX						TM05
	•	MAGNA3 100-XX.
	Fit and tighten the screw holding			0612
6	the clamp to minimum
	6 ± 0.7 ft-lbs (8 ± 1 Nm).							TM05 2872
	Fit the insulating shells.
	Note: For air conditioning and
	cooling systems a silicone sealant
	must be applied inside the
	insulation shell to eliminate all air
7	gaps and prevent condensation
	between the pump housing and
				0412
	insulation shell. Alternatively, the
	pump may be insulated manually			2874
	in accordance with standard
	insulation practices for cooling							TM05
	applications.
			If insulating the pump manually, do not insulate
Caution
			the control box or cover the control panel.

TM05 5549 3812

Fig. 13 Insulation of pump housing and pipework

5. Electrical installation

Carry out the electrical connection and protection according to local regulations.

Check that the supply voltage and frequency correspond to the values stated on the nameplate.

Warning

Never make any connections in the pump control box unless the power supply has been switched off for at least 5 minutes.

Warning

The pump must be connected to an external mains switch with a contact separation of at least 1/8 inch (3 mm) in each pole.

The ground terminal of the pump must be connected to ground. Grounding or neutralization can be used for protection against indirect contact.

If the pump is connected to an electric installation where a Ground Fault Circuit Interrupter (GFCI) is used as additional protection, this circuit interrupter must trip out when ground fault currents with DC content (pulsating DC) occur.

•If rigid conduit is to be used, the hub must be connected to the conduit system before it is connected to the terminal box of the pump.

•The pump must be connected to an external mains switch.

•The pump requires no external motor protection.

•The motor incorporates thermal protection against slow overloading and blocking.

•When switched on via the power supply, the pump will start pumping after approx. 5 seconds.

	Note	The number of starts and stops via the power
		supply must not exceed four times per hour.

English (US)

11

(US) English

5.1 Supply voltage

1 x 115 V ± 10 %, 50/60 Hz, PE.

1 x 208-230 V ± 10 %, 50/60 Hz, PE.

See pump nameplate for rated supply voltage

The voltage tolerances are intended for mains voltage variations. They should not be used for running pumps at other voltages than those stated on the nameplate.

5.2Connection to the power supply (models 40-XX, 50-XX, 65-XX, 80-XX, 100-XX)

	Step	Action	Illustration
		Remove the front	0612
	1	cover from the
			2875TM05
		control box.
		Locate the power
		supply plug and
	2	conduit adapter in	0612
		the box supplied
			2876TM05
		with the pump.
		Connect the
	3	conduit adapter to
		the control box.	TM05 2877 0612
		Pull the power
	4	supply cable
		through the
			06122878TM05
		conduit adapter.
		Strip the cable
	5	conductors as
		illustrated.	TM05 5534 3812

Step Action

Illustration

Connect the cable conductors to the

6power supply plug. L - L or L1 Ground - Ground N - N or L2

Insert the power supply plug into

7the male plug in the pump control box.

Tighten the

8conduit adapter. Refit the front cover.

TM05 2880 0612

TM05 2881 0612

TM05 2882 0612

12

5.3 Connection to the power supply (models 32-XX)

	Step	Action	Illustration
		Remove two
		screws.
		Remove the front	1614
	1	cover from the
		control box and	1102
		access the power
		connection.							TM06
	2	Locate the power	L (L1) N (L2)						16141103TM06
		plug inside.

Connect the conduit to the control box.

3Pull the power supply cable through the conduit.

Strip the cable as illustrated.

Connect the cable

5conductors to the power supply plug. L - L or L1 Ground - Ground N - N or L2

Insert the power plug into its mating

6connector.

Tighten the conduit.

TM06 1104 1614

TM06 1105 1614

TM06 1106 1614

Step Action

Illustration

7Refit the front cover.

TM06 1107 1614

English (US)

13

	(US)English	5.4 Connection diagram
		External switch
		GFCI
		Fuse
		(min. 10 A, time lag)

Fig. 14	Example of typical connection, 1 x 230 V ± 10 %, 50/60 Hz
Note	All cables used must be connected in accordance with local regulations.
5.4.1 Connection to external controllers
			Analog input
		24V	IN
		Vcc	signal
		sensor
	M	M	NC NO C	NC NO C
	A	I S/S
				L	N	Mains
			Alarm			connection
			Operation
	Start/		On/off timer
	stop

Fig. 15 Example of connections in the control box

Warning

Wires connected to supply terminals, outputs NC, NO, C and start/stop input must be separated

from each other and from the supply by reinforced insulation.

Concerning demands on signal wires and signal transmitters, see section 19. Technical data.

Use screened cables for external on/off switch, digital input, sensor and setpoint signals.

	Note	All cables used must be heat-resistant up to
		+185 °F (+85 °C).

TM03 2397 0312

TM05 2673 3812

14

English (US)

TM05 8539 2413

Fig. 16 Wiring diagram, 32-XX versions

The connection terminals of 32-XX versions differ from those of terminal-connected versions, but they have the same function and connection options.

Use screened cables for external on/off switch, digital input, sensor and setpoint signals.

Connect screened cables to the ground connection as follows:

•Terminal-connected versions:

Connect the cable screen to ground via the digital-input terminal (earth).

•Plug-connected versions:

Connect the cable screen to ground via cable clamp.

		Warning
		Wires connected to supply terminals, outputs
		NC, NO, C and start/stop input must be separated
		from each other and from the supply by
		reinforced insulation.
		All cables used must be heat-resistant up to
		+85 °C.
	Note
		All cables used must be installed in accordance
		with EN 60204-1 and EN 50174-2:2000.

15

(US) English

5.5 Input/output communication

•Relay outputs

Alarm, ready and operating indication via signal relay.

•Digital input

–Start/Stop (S/S)

–Min. curve (MI)

–Max. curve (MA).

•Analog input

0-10 V or 4-20 mA control signal.

To be used for external control of the pump or as sensor input for the control of the external setpoint.

The 24 V supply from pump to sensor is optional and is normally used when an external supply is not available.

5.5.1 Relay outputs

See fig. 15, pos. 1.

The pump incorporates two signal relays with a potential-free changeover contact for external fault indication.

The function of the signal relay can be set to "Alarm", "Ready" or "Operation" on the pump control panel or with Grundfos GO Remote.

The relays can be used for outputs up to 250 V and 2 A.

Relay 1							Relay 2
NC NO C							NC NO C

The functions of the signal relays appear from the table below:

Signal relay									Alarm signal
									Not activated:
		1	2		3				•	The power supply has been switched off.
		NC NO			C	C			•	The pump has not registered a fault.
	NC NO
	1		2			3
									Activated:
									•	The pump has registered a fault.
1			2			3
	NC NO					C
Signal relay									Ready signal
									Not activated:
		1	2		3				• The pump has registered a fault and is
	NC NO				C	C				unable to run.
		NC NO				3
	1		2
									Activated:
									• The pump has been set to stop, but is ready
										to run.
1			2			3			•
	NC NO					C				The pump is running.
Signal relay									Operating signal
									Not activated:
	1		2			3			•	The pump is not running.
	1		2		3
		NC NO			C
	NC NO					C
									Activated:
									•	The pump is running.
1			2			3
	NC NO					C

Alarm

Operation

Fig. 17 Relay output

TM05 3338 1212

Contact symbol	Function
NC	Normally closed
NO	Normally open
C	Common

16

5.5.2 Digital inputs

See fig. 15, pos. 2.

The digital input can be used for external control of start/stop or forced max. or min. curve.

If no external on/off switch is connected, the jumper between terminals Start/Stop (S/S) and frame () should be maintained. This connection is the factory setting.

MM

A I S/S

On/off timer

Start/stop

TM05 3339 1212

Fig. 18 Digital input

Contact symbol		Function
M		Max. curve
A		100 % speed
M		Min. curve
I		25 % speed
S/S		Start/Stop
		Frame connection

External start/stop

The pump can be started or stopped via the digital input.

Start/stop

			S/S		H			Normal duty
								Note: Factory setting with
								Q jumper between S/S and		.
			S/S		H			Stop
								Q

External forced max. or min. curve

The pump can be forced to operate on the max. or min. curve via the digital input.

Max. curve

M H

A

Normal duty

Q

M H

A

Max. curve

Q

Min. curve

MH

I

Normal duty

Q

M H

I

Min. curve

Q

Select the function of the digital input on the pump control panel or with Grundfos GO Remote.

English (US)

17

(US) English

5.6 Analog input for external sensor

The analog input can be used for the connection of an external sensor for measuring temperature or pressure.

The analog input can also be used for an external signal for the control from a BMS system or similar control system.

The electrical signal for the input can be 0-10 VDC or 4-20 mA.

The selection of electrical signal (0-10 V or 4-20 mA) can be changed on the control panel or with Grundfos GO Remote.

24V					IN
							1112
Vcc					signal		3221
							TM05
		sensor

Fig. 19 Analog input for external sensor or control

In order to optimize the pump performance, external sensors can advantageously be used in the following cases:

Function/control mode		Sensor type
Heat energy meter		Temperature sensor
Constant temperature		Temperature sensor
Differential pressure		Pressure sensor

- +

Sensor

										TM06 0882 1114
			Sensor
	Fig. 20	Wiring, analog input
	PIN	Description								Load
	IN	Analog input							150 Ω (4-20 mA signal)
									78 kΩ (0-10 V signal)
	24 V 24 V supply to external sensor									Max. 22 mA

Ground for external sensor

1

24V IN

Vcc

Signal

2

TM05 2947 1212

Fig. 21 Examples of external sensors

Pos. Sensor type

Differential pressure transmitter,

1Grundfos type DPI V.2

1/2" connection and 4-20 mA signal. Relative pressure transmitter,

2combined pressure and temperature sensor, Grundfos type RPI/T G 1/2" connection and 4-20 mA signal.

For further details, visit WebCAPS and reference Magna3 Data booklet 98439208.

BMS

PLC

24V

TM05 2888 0612

Fig. 22 Example of external signal for the control via BMS or PLC

18

5.7 Electrical connection for external sensor

					2
					1
					4
					7156TM041610
					3
	Fig. 23 Example electrical connections for external sensor
	PIN	1	2	3	4
	Wire color	Brown	Grey	Blue	Black
	Output	+	not used	-	not used
	4 to 20 mA
	Output	+	Pressure	-*	Temperature
	2 x 0 to 10 V		signal		signal

*Common ground for both pressure and temperature signal.

*Power supply (screened cable): SELV or PELV.

5.8 Priority of settings

The external forced-control signals will influence the settings available on the pump control panel or with Grundfos GO Remote. However, the pump can always be set to max. curve duty or to stop on the pump control panel or with Grundfos GO Remote.

If two or more functions are enabled at the same time, the pump will operate according to the setting with the highest priority.

The priority of the settings is as shown in the table below.

Example: If the pump has been forced to stop via an external signal, the pump control panel or Grundfos GO Remote can only set the pump to max. curve.

			Possible settings
	Priority	Pump control	External
		panel or		Bus signal
		Grundfos GO	signals
		Remote
	1	Stop
	2	Max. curve
	3		Stop
	4			Stop
	5			Max. curve
	6			Min. curve
	7			Start
	8		Max. curve
	9	Min. curve
	10		Min. curve
	11	Start

As illustrated in the table, the pump does not react to external signals (max. curve and min. curve) when it is controlled via bus.

For further details, please contact Grundfos.

English (US)

19

English	6. First start-up
	Do not start the pump until the system has been filled with liquid
	and vented. Furthermore, the required minimum inlet pressure
(US)	must be available at the pump inlet. See section 19. Technical
	data.
	The system cannot be vented through the pump. The pump is
	self-venting.
	Step	Action	Illustration

Switch on the power supply to the pump.

1Note: When switched on, the pump will start in AUTOADAPT after approx. 5 seconds.

Pump display at first start-up.

2After a few seconds, the pump display will change to the start-up guide.

The start-up guide will guide you through the general settings of the pump, such as language, date and time.

3If the buttons on the pump control panel are not touched for 15 minutes, the display will go into sleep mode.

When a button is touched, the "Home" display will appear.

When the general settings have been made, select the

4desired control mode or let the pump run in AUTOADAPT. For additional settings, see section 7. Settings.

TM05 2884 0612

TM05 2885 0612

TM05 2886 0612

TM05 2887 0612

20

7. Settings

7.1 Overview of settings

All settings can be made on the pump control panel or with Grundfos GO Remote.

Menu	Submenu		Further information
Setpoint			See section 13.1 Setpoint.
Operating mode			See section 13.2 Operating mode.
	•	Normal
	•	Stop
	•	Min.
	•	Max.
Control mode			See section 13.3 Control mode.
	•	AUTOADAPT	See section 13.3.1 AUTOADAPT.
	•	FLOWADAPT	See section 13.3.2 FLOWADAPT.
	•	Prop. press.	See section 13.3.3 Proportional pressure.
	•	Const. press.	See section 13.3.4 Constant pressure.
	•	Const. temp.	See section 13.3.5 Constant temperature.
	•	Differential temperature	See section 13.3.6 Differential temperature.
	•	Constant curve	See section 13.3.7 Constant curve.
FLOWLIMIT			See section 13.4 FLOWLIMIT.
	•	Set FLOWLIMIT
Automatic Night Setback			See section 13.5 Automatic Night Setback.
	•	Not active
	•	Active
Relay outputs			See section 13.6 Relay outputs.
	•	Relay output 1
	•	Relay output 2
Setpoint influence			See section 13.7 Setpoint influence.
	•	External setpoint function	See section 13.7.1 External setpoint function.
	•	Temperature influence	See section 13.7.2 Temperature influence.
Bus communication			See section 13.8 Bus communication.
	•	Pump number	See section 13.8.1 Pump number.
General settings			See section 13.9 General settings.
	•	Language	See section 13.9.1 Language.
	•	Set date and time	See section 13.9.2 Set date and time.
	•	Units	See section 13.9.3 Units.
	•	Enable/disable settings	See section 13.9.4 Enable/disable settings.
	•	Delete history	See section 13.9.5 Delete history.
	•	Define Home display	See section 13.9.6 Define Home display.
	•	Display brightness	See section 13.9.7 Display brightness.
	•	Return to factory settings	See section 13.9.8 Return to factory settings.
	•	Run start-up guide	See section 13.9.9 Run start-up guide.

English (US)

21

(US) English

8. Menu overview

Status	Settings	Assist
Operating status	Setpoint	Assisted pump setup
Operating mode, from	Operating mode	Setting of pump
Control mode	Control mode	Setting of date and time
Pump performance	FLOWLIMIT	Date format, date and time
Max. curve and duty point	Enable FLOWLIMIT function	Date only
Resulting setpoint	Set FLOWLIMIT	Time only
Liquid temperature	Automatic Night Setback	Multi-pump setup
Speed	Relay outputs	Setup, analog input
Operating hours	Relay output 1	Description of control mode
Power and energy consumption	Relay output 2	AUTOADAPT
Power consumption	Not active	FLOWADAPT
Energy consumption	Ready	Prop. press.
Warning and alarm	Alarm	Const. press.
Actual warning or alarm	Operation	Const. temp.
Warning log	Setpoint influence	Differential temperature
Warning log 1 to 5	External setpoint function	Constant curve
Alarm log	Temperature influence	Assisted fault advice
Alarm log 1 to 5	Bus communication	Blocked pump
Heat energy meter	Pump number	Pump communication fault
Heat power	General settings	Internal fault
Heat energy	Language	Internal sensor fault
Flow rate	Set date and time	Dry running
Volume	Select date format	Forced pumping
Hours counter	Set date	Undervoltage
Temperature 1	Select time format	Overvoltage
Temperature 2	Set time	External sensor fault
Differential temp.	Units
Work log	SI or US units
Operating hours	Customized units
Trend data	Pressure
Duty point over time	Differential pressure
3D showing (Q, H, t)	Head
3D showing (Q, T, t)	Level
3D showing (Q, P, t)	Flow rate
3D showing (T, P, t)	Volume
Fitted modules	Temperature
Date and time	Differential temp.
Date	Power
Time	Energy
Pump identification	Enable/disable settings
Multi-pump system	Delete history
Operating status	Delete work log
Operating mode, from	Delete heat energy data
Control mode	Delete energy consumption
System performance	Define Home display
Duty point	Select Home display type
Resulting setpoint	List of data
System identification	Graphical illustration
Power and energy consumption	Define Home display contents
Power consumption	List of data
Energy consumption	Graphical illustration
Other pump 1, multi-pump sys.	Display brightness
	Brightness
	Return to factory settings
	Run start-up guide

22

9. Control panel

Warning

At high liquid temperatures, the pump housing may be very hot. In that case, only touch the control panel.

TM05 7642 1313

Fig. 24 Control panel

Button Function

Goes to the "Home" menu.

Returns to the previous action.

Navigates between main menus, displays and digits.

When the menu is changed, the display will always show the top display of the new menu.

Navigates between submenus.

Saves changed values, resets alarms and expands the value field.

10. Menu structure

The pump incorporates a start-up guide which is started at the first start-up. After the start-up guide, the four main menus will appear in the display. See section 6. First start-up.

1. Home

This menu shows up to four user-defined parameters with shortcuts or a graphical illustration of a Q/H performance curve. See section 11. "Home" menu.

2. Status

This menu shows the status of the pump and system as well as warnings and alarms. See section 12. "Status" menu.

Note	No settings can be made in this menu.

3. Settings

This menu gives access to all setting parameters. A detailed setting of the pump can be made in this menu.

See section 13. "Settings" menu.

4. Assist

This menu enables assisted pump setup, provides a short description of the control modes and offers fault advice.

See section 14. "Assist" menu.

11. "Home" menu

TM05 7929 1613

Navigation

Home

Press to go to the "Home" menu.

"Home" menu (factory setting)

•Shortcut to control mode settings

•Shortcut to setpoint settings

•Flow rate

•Head.

Navigate in the display with or and change between the two shortcuts with or .

The "Home" display can be defined by the user. See section 13.9.6 Define Home display.

English (US)

23

(US) English

12. "Status" menu

13. "Settings" menu

	2.1.0.0.0.0 Status		3.1.0.0.0.0 Settings
Navigation		Navigation
Home > Status		Home > Settings
Press and go to the "Status" menu with .		Press and go to the "Settings" menu with .
"Status" menu		"Settings" menu
This menu offers the following status information:		This menu offers the following setting options:
•	Operating status	•	Setpoint
•	Pump performance	•	Operating mode
• Power and energy consumption		•	Control mode
•	Warning and alarm	•	FLOWLIMIT
•	Heat energy meter	•	Automatic Night Setback
•	Work log	•	Relay outputs
•	Fitted modules	•	Setpoint influence
•	Date and time	•	Bus communication
•	Pump identification	•	General settings.
•	Multi-pump system.	Navigate between submenus with or .
Navigate between submenus with or .		13.1 Setpoint

TM05 7925 1613

Navigation

Home > Settings > Setpoint

Setpoint

Set the setpoint so that it matches the system.

Setting:

1.Press [OK] to start the setting.

2.Select digit with and and adjust with or .

3.Press [OK] to save.

A too high setting may result in noise in the system whereas a too low setting may result in insufficient heating or cooling in the system.

Control mode	Measuring unit
Proportional pressure	m, ft
Constant pressure	m, ft
Constant temperature	°C, °F, K
Constant curve	%

24

13.2 Operating mode

13.3 Control mode

3.1.2.0.0.0 Operating mode

Navigation

Home > Settings > Operating mode

Operating mode

•Normal (control mode)

•Stop

•Min. (min. curve)

•Max. (max. curve). Setting:

1. Select operating mode with or .

2. Press [OK] to save.

The pump can be set to operate according to the max. or min. curve, like an uncontrolled pump. See fig. 25.

H

Max.

	Min.		5111
			TM05 2446
		Q

Fig. 25 Max. and min. curves

•Normal: The pump runs according to the selected control mode.

•Stop: The pump stops.

•Min.: The min. curve mode can be used in periods in which a minimum flow is required.

This operating mode is for instance suitable for manual night setback if Automatic Night Setback is not desired.

•Max.: The max. curve mode can be used in periods in which a maximum flow is required.

This operating mode is for instance suitable for hot-water priority.

3.1.3.0.0.0 Control mode

Navigation

Home > Settings > Control mode

Control mode

•AUTOADAPT

•FLOWADAPT

•Prop. press. (proportional pressure)

•Const. press. (constant pressure)

•Const. temp.(constant temperature)

•Constant curve.

		The operating mode must be set to "Normal"
	Note
		before a control mode can be enabled.

Setting:

1. Select control mode with or .

2. Press [OK] to enable.

The setpoint for all control modes, except AUTOADAPT and FLOWADAPT, can be changed in the "Setpoint" submenu under "Settings" when the desired control mode has been selected.

All control modes, except "Constant curve", can be combined with Automatic Night Setback. See section 13.5 Automatic Night Setback.

The FLOWLIMIT function can also be combined with the last five control modes mentioned above. See section 13.4 FLOWLIMIT.

English (US)

25

(US) English

13.3.1 AUTOADAPT

The AUTOADAPT control mode continuously adapts the pump performance according to the actual system characteristic.

Note	Manual setting of the setpoint is not possible.

	H
	Hfac	Hset1
	A1
Hauto_min		A2	Hset2	1312
	A3			TM05 2452
			Q
Fig. 26	AUTOADAPT

When the AUTOADAPT control mode has been enabled, the pump will start with the factory setting, Hfac = Hset1, corresponding to

approx. 55 % of its maximum head, and then adjust its performance to A1. See fig. 26.

When the pump registers a lower head on the max. curve, A2, the AUTOADAPT function will automatically select a correspondingly lower control curve, Hset2. If the valves in the system close, the pump will adjust its performance to A3.

A1: Original duty point.

A2: Lower registered head on the max. curve.

A3: New duty point after AUTOADAPT control. Hset1: Original setpoint setting.

Hset2: New setpoint after AUTOADAPT control. Hfac.: MAGNA3 xx-60: 11.4 ft (3.5 m)

MAGNA3 xx-80: 14.7 ft (4.5 m) MAGNA3 xx-100: 18 ft (5.5 m) MAGNA3 xx-120: 21.3 ft (6.5 m) MAGNA3 xx-150: 26.2 ft (8.0 m) MAGNA3 xx-180: 31.1 ft (9.5 m).

Hauto_min: A fixed value of 4.9 ft (1.5 m).

The AUTOADAPT control mode is a form of proportional-pressure control where the control curves have a fixed origin, Hauto_min.

The AUTOADAPT control mode has been developed specifically for heating systems and is not recommended for air-conditioning

and cooling systems.

To reset AUTOADAPT, see section 13.9.8 Return to factory settings.

13.3.2 FLOWADAPT

When FLOWADAPT is selected, the pump will run AUTOADAPT and ensure that the flow never exceeds the entered FLOWLIMIT value.

The setting range for the FLOWLIMIT is 25 to 90 % of the Qmax of the pump.

The factory setting of the FLOWLIMIT is the flow where the AUTOADAPT factory setting meets the max. curve. See fig. 27.

	H	90 % Qmax
	Setting range
	Hfac
Hauto_min			12123334
	Qfac	Q	TM05
Fig. 27	FLOWADAPT

13.3.3 Proportional pressure

The pump head is reduced at decreasing water demand and increased at rising water demand. See fig. 28.

	H
	Hset
Hset						1212
						2448
	2
					Q	TM05

Fig. 28 Proportional pressure

26

13.3.4 Constant pressure

The pump maintains a constant pressure, irrespective of water demand. See fig. 29.

H

Q	TM05 2449 0312

Fig. 29 Constant pressure

13.3.5 Constant temperature

This control mode ensures a constant temperature.

Constant temperature is a comfort control mode that can be used in domestic hot-water systems to control the flow to maintain a fixed temperature in the system. See fig. 30. When this control mode is used, no balancing valves must be installed in the system.

If the pump is installed in the return pipe of the system, the internal temperature sensor can be used. In this case, the pump must be installed as close as possible to the consumer (radiator, heat exchanger, etc.).

If the pump is installed in the flow pipe, an external temperature sensor must be installed in the return pipe of the system.

The sensor must be installed as close as possible to the consumer (radiator, heat exchanger, etc.).

The constant-temperature control mode also reduces the risk of bacterial growth (for example Legionella) in the system.

It is possible to set the sensor range:

•min. +14 °F (-10 °C)

•max. +266 °F (+130 °C).

To ensure that the pump is able to control, we Note recommend to set the sensor range between

+3 °F and +257 °F (-5 and +125 °C).

H

Q	TM05 2451 5111

Fig. 30 Constant temperature

13.3.6 Differential temperature

This control mode ensures a constant differential temperature drop across a heating system.

The pump should be installed in the flow pipe so the built-in sensor measures the liquid temperature going out to the load. An external temperature sensor must be installed in the system to measure the liquid temperature returning from the heating load. In this mode, the pump will maintain a constant temperature. See figs 31 and 32, differential between the pump and the external sensor.

H

t

Q	TM05 2451 5111

Fig. 31 Differential temperature

2113

t

TM05 8236

Fig. 32

Differential temperature

Changing Kp and Ti values are only possible with

Note

Grundfos GO.

Changing the Kp and Ti values will affect all control modes. If the control mode is to be

Note changed back to another mode you must set the Kp and Ti values back to default values. For all

other modes the default values are Kp = 0.5, Ti = 0.5.

English (US)

27

(US) English

See table, fig. 33.

The table shows the suggested controller settings:

		Kp
System/application	Heating	Cooling	Ti
	system1)	system2)
t	0.5	- 0.5	10 + 5L2
L2 [m]
t		-0.5	10 + 5L2
L2 [m]
L2 [m]
t	0.5	- 0.5	30 + 5L2

Fig. 33 Suggested controller settings

1)Heating systems are systems in which an increase in pump performance will result in a rise in temperature at the sensor.

2)Cooling systems are systems in which an increase in pump performance will result in a drop in temperature at the sensor.

L2 = Distance in [m] between heat exchanger and sensor.

Proceed as follows:

1.Increase the gain (Kp) until the motor becomes unstable. Instability can be seen by observing if the measured value starts to fluctuate. Furthermore, instability is audible as the motor starts hunting up and down.

Some systems, such as temperature controls, are slow-reacting, meaning that it may be several minutes before the motor becomes unstable.

2.Set the gain (Kp) to half the value of the value which made the motor unstable. This is the correct setting of the gain.

3.Reduce the integral time (Ti) until the motor becomes unstable.

4.Set the integral time (Ti) to twice the value which made the motor unstable. This is the correct setting of the integral time.

General rules of thumb:

•If the controller is too slow-reacting, increase Kp.

•If the controller is hunting or unstable, dampen the system by reducing Kp or increasing Ti.

13.3.7 Constant curve

The pump can be set to operate according to a constant curve, like an uncontrolled pump. See fig. 34.

The desired speed can be set in % of maximum speed in the range from 25 to 100 %.

H

Q	TM05 2446 0312

Fig. 34 Constant curve

Depending on the system characteristic and the duty point, the 100 % setting may be slightly smaller than the pump's actual max. curve even

Note though the display shows 100 %. This is due to power and pressure limitations built into the pump. The deviation varies according to pump type and pressure loss in the pipes.

H [%]

100 %

Limited max. curve

Max. curve
Actual duty point	TM05 3041 1212
Q [m3/h]

Fig. 35 Power and pressure limitations influencing the max. curve

28

13.4 FLOWLIMIT

3.1.5.0.0.0 FLOWLIMIT

Navigation

Home > Settings > FLOWLIMIT

FLOWLIMIT

•Enable FLOWLIMIT function

•Set FLOWLIMIT.

Setting:

1. To enable the function, select "Active" with or and press [OK].

2. To set the FLOWLIMIT, press [OK] to start the setting. 3. Select digit with and and adjust with or .

4. Press [OK] to save.

	H	90 % Qmax
	Setting range
		Q	2445 1212
	Qlimit		TM05

Fig. 36 FLOWLIMIT

The FLOWLIMIT function can be combined with the following control modes:

•Prop. press.

•Const. press.

•Const. temp.

•Constant curve.

A flow-limiting function ensures that the flow never exceeds the entered FLOWLIMIT value.

The setting range for FLOWLIMIT is 25 to 90 % of the Qmax of the pump.

The factory setting of the FLOWLIMIT is the flow where the AUTOADAPT factory setting meets the max. curve. See fig. 27.

13.5 Automatic Night Setback	English (US)
Night Setback
3.1.6.0.0.0 Automatic

Navigation

Home > Settings > Automatic Night Setback

Automatic Night Setback

To enable the function, select "Active" with or and press [OK].

Once Automatic Night Setback has been enabled, the pump automatically changes between normal duty and night setback (duty at low performance).

Changeover between normal duty and night setback depends on the flow-pipe temperature.

The pump automatically changes over to night setback when the built-in sensor registers a flow-pipe temperature drop of more than +18 to +27 °F (-8 to -3 °C) within approx. two hours.

The temperature drop must be at least 0.18 °F/min (0.1 °C/min).

Changeover to normal duty takes place without a time lag when the temperature has increased by approx. +18 °F (-8 °C).

		Automatic Night Setback cannot be enabled
	Note
		when the pump is in constant-curve mode.

29

(US) English

13.6 Relay outputs

13.7 Setpoint influence

3.1.12.0.0.0 Relay outputs

Navigation

Home > Settings > Relay outputs

Relay outputs

•Relay output 1

•Relay output 2.

The relay outputs can be set to the following:

•Not active

•Ready

•Alarm

•Operation.

The pump incorporates two signal relays, terminals 1, 2 and 3, for a potential-free alarm signal, ready signal and operating signal. For further information, see section 5.5.1 Relay outputs.

Set the function of the signal relays, alarm signal (factory setting), ready signal and operating signal, on the pump control panel.

The output, terminals 1, 2 and 3, is electrically separated from the rest of the controller.

The signal relay is operated as follows:

•Not active

The signal relay is deactivated.

•Ready

The signal relay is active when the pump is running or has been set to stop, but is ready to run.

•Alarm

The signal relay is activated together with the red indicator light on the pump.

•Operation

The signal relay is activated together with the green indicator light on the pump.

3.1.15.0.0.0 Setpoint influence

Navigation

Home > Settings > Setpoint influence

Setpoint influence

•External setpoint function

•Temperature influence.

13.7.1 External setpoint function

Range

4-20 mA	[0-100 %]
0-10 V	[0-100 %]
Control
0-20 %	(e.g. 0-2 V)	Setpoint = Min.
20-100 %	(e.g. 2-10 V)	Setpoint = Min. ↔ setpoint

The external setpoint function is an external 0-10 V or 4-20 mA signal that will control the pump speed in a range from 0 to 100 % in a linear function. See fig. 37.

		Before the "External setpoint function" can be
	Note	enabled, the analog input must be set to "External
		setpoint influence" via the "Assist" menu.

See section 5.6 Analog input for external sensor.

	rpm
	Max.
	Min.				1212
	0	2	10		3219
				V	TM05
Fig. 37	External setpoint function, 0-10 V

30